EOS ENERGY ENTERPRISES INC EOSE
COM CL A · Common Stock · CUSIP 29415C101 · ISIN US29415C1018
Energy storage company
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($436.4k this quarter). Holder counts are more reliable. Shares outstanding: 364.2m as of 2026-08-03, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $5.88. Options: 37 managers hold calls ($298.6m notional), 25 hold puts ($226.1m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 71 |
| Q4 2022 | 79 |
| Q1 2023 | 90 |
| Q2 2023 | 120 |
| Q3 2023 | 137 |
| Q4 2023 | 136 |
| Q1 2024 | 134 |
| Q2 2024 | 128 |
| Q3 2024 | 127 |
| Q4 2024 | 156 |
| Q1 2025 | 178 |
| Q2 2025 | 216 |
| Q3 2025 | 276 |
| Q4 2025 | 322 |
| Q1 2026 | 318 |
| Q2 2026 | 349 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 65 | 69 |
| Q4 2024 | 90 | 52 |
| Q1 2025 | 107 | 63 |
| Q2 2025 | 157 | 69 |
| Q3 2025 | 175 | 94 |
| Q4 2025 | 207 | 130 |
| Q1 2026 | 201 | 149 |
| Q2 2026 | 210 | 144 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $536.5m | $425.9m | 0.79 |
| Q4 2025 | $664.8m | $492.6m | 0.74 |
| Q1 2026 | $219.2m | $167.7m | 0.77 |
| Q2 2026 | $298.6m | $226.1m | 0.76 |
Biggest buyers
| Hudson Bay Capital Management LP | New | +13.7m |
| Graham Capital Management, L.P. | New | +3.6m |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +3.3m |
| BlackRock, Inc. | Added | +3.0m |
| Legal & General Group Plc | Added | +2.9m |
| MORGAN STANLEY | Added | +2.4m |
| STATE STREET CORP | Added | +2.1m |
| UBS Group AG | Added | +2.0m |
| ExodusPoint Capital Management, LP | New | +2.0m |
| Cable Car Capital, LP | New | +2.0m |
Biggest sellers
| MARSHALL WACE, LLP | Reduced | -6.2m |
| HRT FINANCIAL LP | Sold out | -5.2m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold out | -3.4m |
| CITADEL ADVISORS LLC | Reduced | -2.8m |
| Marex Group Ltd | Reduced | -2.0m |
| GROUP ONE TRADING LLC | Reduced | -1.9m |
| GOLDMAN SACHS GROUP INC | Reduced | -1.9m |
| RENAISSANCE TECHNOLOGIES LLC | Sold out | -1.8m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.7m |
| Qube Research & Technologies Ltd | Sold out | -1.6m |
Biggest calls
| CITADEL ADVISORS LLC | Added | $62.2m10.6m shares |
| GROUP ONE TRADING LLC | Added | $61.6m10.5m shares |
| Walleye Trading LLC | Added | $33.9m5.8m shares |
| JANE STREET GROUP, LLC | Added | $33.3m5.7m shares |
| Caption Management, LLC | Added | $27.8m4.7m shares |
| IMC-Chicago, LLC | Added | $17.8m3.0m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $16.0m2.7m shares |
| D. E. Shaw & Co., Inc. | Reduced | $12.3m2.1m shares |
| Point72 Asset Management, L.P. | Reduced | $9.8m1.7m shares |
| SIMPLEX TRADING, LLC | Reduced | $8.4m1.4m shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $58.1m9.9m shares |
| CITADEL ADVISORS LLC | Added | $30.9m5.3m shares |
| GROUP ONE TRADING LLC | Added | $27.7m4.7m shares |
| Walleye Trading LLC | Added | $23.5m4.0m shares |
| JANE STREET GROUP, LLC | Reduced | $21.0m3.6m shares |
| IMC-Chicago, LLC | Reduced | $10.4m1.8m shares |
| SIMPLEX TRADING, LLC | Added | $10.1m1.7m shares |
| Caption Management, LLC | Reduced | $9.2m1.6m shares |
| Ursa Fund Management, LLC | New | $8.9m1.5m shares |
| DLD Asset Management, LP | Reduced | $6.5m1.1m shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Cerberus Capital Management II, L.P.
13D · may seek influence
+1.5 pts · filed 2026-08-06
Stated purposeItem 4 is hereby amended and supplemented by the addition of the following: Pursuant to the previously disclosed A&R Term Sheet, on August 4, 2026, the Issuer, CCM Frontier, and HBC MSF Capital Solutions Blocker II LLC, an affiliate of Hudson Bay Capital Management LP ("HBC"), consummated the closing of the funding (the "Funding") of Frontier Power USA Parent, LLC (the "JV Company"), a Delaware limited liability company and a joint venture among the Issuer, CCM Frontier and HBC. Pursuant to a Contribution and Warrants Purchase Agreement (the "Contribution and Warrants Purchase Agreement"), dated as of August 4, 2026, by and between CCM Frontier and the JV Company, CCM Frontier (i) caused the JV Company to receive the benefit of certain contracts, contacts, investment opportunities, … Full filing |
32.6% |
| BlackRock, Inc. 13G · institution +1.1 pts · filed 2026-07-28 | 7.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), SUSQUEHANNA SECURITIES, LLC (4.5%, 2026-02-13)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 4 | $3.8m | — |
| Q3 2025 | 0 | — | 6 | $4.0m | $3.3m |
| Q4 2025 | 0 | — | 3 | $12.9m | — |
| Q1 2026 | 3 | $693.0k | 2 | $1.5m | $1.5m |
| Q2 2026 | 0 | — | 5 | $904.3k | $413.9k |
| Q3 2026 | 1 | $58.7k | 3 | $2.7m | $2.1m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-16 | Mastrangelo Joe Chief Executive Officer, director | Sold plan | $980.0k250.0k shares |
| 2026-09-16 | Puri Sumeet Chief Accounting Officer | Sold plan | $171.5k43.8k shares |
| 2026-09-14 | Song Haiyan Director | Bought | $19.2k5.0k shares |
| 2026-09-11 | Song Haiyan Director | Bought | $39.5k10.0k shares |
| 2026-09-09 | Puri Sumeet Chief Accounting Officer | Sold plan | $141.1k34.2k shares |
| 2026-07-28 | Kroeker Nathan Chief Commercial Officer | Sold plan | $371.0k110.4k shares |
| 2026-07-28 | Puri Sumeet Chief Accounting Officer | Sold plan | $98.0k29.2k shares |
| 2026-07-27 | Mastrangelo Joe Chief Executive Officer, director | Sold | $574.5k159.2k shares |
| 2026-07-07 | Kroeker Nathan CCO and Interim CFO | Sold plan | $371.2k79.3k shares |
| 2026-06-30 | Kroeker Nathan CCO and Interim CFO | Sold plan | $206.8k35.3k shares |
| 2026-06-30 | Silberman Michael W Chief Legal Officer | Sold plan | $88.0k15.0k shares |
| 2026-06-30 | Buczkowski Michelle Chief Administration Officer | Sold plan | $67.3k11.5k shares |
| 2026-06-30 | Puri Sumeet Chief Accounting Officer | Sold plan | $51.7k8.8k shares |
| 2026-05-28 | Walters Marian Director | Sold | $275.4k30.0k shares |
| 2026-05-20 | Walters Marian Director | Sold | $160.7k22.3k shares |
| 2026-05-19 | Walters Marian Director | Sold | $54.3k7.7k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 27.1m $159.5m | Added +3.0m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 15.0m $88.3m | Added +186.0k |
| Hudson Bay Capital Management LP 0.38% of their portfolio | 13.7m $80.5m | New |
| Driehaus Capital Management LLC 0.46% of their portfolio | 13.6m $79.7m | Reduced -1.3m |
| TWO SIGMA INVESTMENTS, LP 0.06% of their portfolio | 12.8m $75.2m | Reduced -1.3m |
| STATE STREET CORP 0.00% of their portfolio | 10.2m $59.7m | Added +2.1m |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.05% of their portfolio | 9.7m $56.9m | Added +3.3m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 8.9m $52.3m | Added +1.1m |
| Electron Capital Partners, LLC 1.57% of their portfolio | 6.7m $39.3m | Added +1.3m |
| MORGAN STANLEY 0.00% of their portfolio | 5.3m $31.2m | Added +2.4m |
| STIFEL FINANCIAL CORP 0.02% of their portfolio | 4.4m $26.0m | Added +280.1k |
| Crystal Cove Asset Management, LLC 27.49% of their portfolio | 4.3m $25.2m | Reduced -13.3k |
| UBS Group AG 0.00% of their portfolio | 3.9m $23.0m | Added +2.0m |
| Legal & General Group Plc 0.00% of their portfolio | 3.9m $22.9m | Added +2.9m |
| Graham Capital Management, L.P. 0.56% of their portfolio | 3.6m $21.0m | New |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 3.3m $19.5m | Reduced -2.8m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 3.3m $19.3m | Added +446.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 2.9m $17.1m | Added +417.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 2.8m $16.7m | Added +200.9k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.02% of their portfolio | 2.6m $15.1m | Added +1.2m |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.02% of their portfolio | 2.5m $15.2m | Added +1.7m |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 2.4m $14.3m | Added +194.7k |
| CAPITAL FUND MANAGEMENT S.A. 0.09% of their portfolio | 2.2m $12.8m | Added +746.9k |
| Alyeska Investment Group, L.P. 0.03% of their portfolio | 2.0m $12.0m | Added +1.4m |
| Polar Capital Holdings Plc 0.03% of their portfolio | 2.0m $11.8m | Added +320.0k |
| ExodusPoint Capital Management, LP 0.11% of their portfolio | 2.0m $11.8m | New |
| Cable Car Capital, LP 0.51% of their portfolio | 2.0m $11.8m | New |
| Invesco Ltd. 0.00% of their portfolio | 1.6m $9.4m | Reduced -56.1k |
| DNB Asset Management AS 0.02% of their portfolio | 1.3m $7.7m | Added +112.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 1.3m $7.5m | Added +27.5k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 1.3m $7.4m | Reduced -1.7m |
| SIMPLEX TRADING, LLC 0.19% of their portfolio | 1.2m $7.3m | Added +256.3k |
| Ursa Fund Management, LLC 1.19% of their portfolio | 1.2m $7.3m | New |
| Jupiter Topco LLC 0.00% of their portfolio | 1.2m $7.2m | First filing |
| BOOTHBAY FUND MANAGEMENT, LLC 0.13% of their portfolio | 1.2m $7.2m | Added +1.1m |
| BARINGS LLC 0.13% of their portfolio | 1.2m $7.1m | Unchanged |
| MASTERS CAPITAL MANAGEMENT LLC 0.99% of their portfolio | 1.2m $7.1m | New |
| Quarry LP 1.08% of their portfolio | 1.2m $6.9m | New |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 1.2m $6.8m | Added +954.8k |
| Baker Avenue Asset Management, LP 0.12% of their portfolio | 1.1m $6.3m | Added +73.6k |
| GROUP ONE TRADING LLC 0.18% of their portfolio | 1.1m $6.2m | Reduced -1.9m |
| Nuveen, LLC 0.00% of their portfolio | 1.1m $6.2m | Added +322.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 940.5k $5.5m | Added +61.0k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 937.0k $5.5m | Reduced -600.6k |
| Walleye Trading LLC 0.07% of their portfolio | 907.2k $5.3m | Reduced -280.8k |
| Quantinno Capital Management LP 0.01% of their portfolio | 895.1k $5.3m | Reduced -183.0k |
| Baird Financial Group, Inc. 0.01% of their portfolio | 863.5k $5.1m | Added +74.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 833.6k $4.9m | Reduced -1.9m |
| LPL Financial LLC 0.00% of their portfolio | 793.3k $4.7m | Added +126.3k |
| FMR LLC 0.00% of their portfolio | 787.4k $4.6m | Added +217.8k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 769.1k $4.5m | Reduced -164.7k |
| Marex Group Ltd 0.03% of their portfolio | 728.6k $4.3m | Reduced -2.0m |
| Trexquant Investment LP 0.03% of their portfolio | 695.0k $4.1m | New |
| Swiss National Bank 0.00% of their portfolio | 681.3k $4.0m | Added +42.3k |
| Tidal Investments LLC 0.01% of their portfolio | 649.1k $3.8m | Added +390.5k |
| Defiance ETFs, LLC 0.05% of their portfolio | 637.1k $3.5m | Added +408.4k |
| Bridgewater Associates, LP 0.02% of their portfolio | 633.1k $3.7m | New |
| TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio | 622.8k $3.7m | Reduced -1.5m |
| Shay Capital LLC 0.38% of their portfolio | 590.0k $3.5m | Added +15.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 580.4k $3.4m | Added +50.3k |
| Man Group plc 0.01% of their portfolio | 573.2k $3.4m | Added +554.4k |
| NewEdge Advisors, LLC 0.01% of their portfolio | 558.1k $3.3m | Reduced -435.5k |
| ARDSLEY ADVISORY PARTNERS LP 0.35% of their portfolio | 550.0k $3.2m | Added +250.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 529.0k $3.1m | Added +107.8k |
| ALPS ADVISORS INC 0.01% of their portfolio | 508.3k $3.0m | Reduced -3.7k |
| Alpine Global Management, LLC 0.48% of their portfolio | 500.0k $2.9m | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 481.8k $2.8m | Added +195.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 471.6k $2.8m | Reduced -561.9k |
| &PARTNERS 0.01% of their portfolio | 458.7k $2.7m | Added +15.3k |
| IMC-Chicago, LLC 0.02% of their portfolio | 440.5k $2.6m | Reduced -388.4k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.14% of their portfolio | 438.2k $2.6m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 430.6k $2.7m | Reduced -21.9k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 421.6k $2.5m | Added +56.0k |
| LMR Partners LLP 0.02% of their portfolio | 405.6k $2.4m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 400.4k $2.0m | Added +45.4k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 393.6k $2.3m | Added +107.8k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 392.1k $2.3m | Added +16.0k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 373.9k $2.2m | Reduced -6.2m |
| Kestra Advisory Services, LLC 0.01% of their portfolio | 361.7k $2.1m | Added +10.3k |
| XTX Topco Ltd 0.03% of their portfolio | 344.3k $2.0m | Reduced -134.2k |
| NISSAY ASSET MANAGEMENT CORP /JAPAN 0.01% of their portfolio | 312.0k $1.8m | Added +103.1k |
| National Philanthropic Trust 0.02% of their portfolio | 293.8k $1.7m | Added +47.2k |
| ALGERT GLOBAL LLC 0.02% of their portfolio | 287.3k $1.7m | Reduced -373.4k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 285.3k $1.7m | Added +238.8k |
| GILDER GAGNON HOWE & CO LLC 0.02% of their portfolio | 263.1k $1.5m | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 255.8k $1.5m | Reduced -58.0k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 252.6k $1.5m | Added +105.2k |
| Sagefield Capital LP 0.11% of their portfolio | 252.6k $1.5m | Added +8.7k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 238.0k $1.4m | Added +23.2k |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 237.9k $1.4m | Added +105.6k |
| BARCLAYS PLC 0.00% of their portfolio | 229.7k $1.4m | Reduced -346.4k |
| WESBANCO BANK INC 0.03% of their portfolio | 228.5k $1.3m | New |
| Lido Advisors, LLC 0.00% of their portfolio | 217.1k $1.3m | Reduced -2.2k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 214.2k $1.3m | New |
| CITIGROUP INC 0.00% of their portfolio | 202.4k $1.2m | Reduced -184.5k |
| MetLife Investment Management, LLC 0.01% of their portfolio | 202.0k $1.2m | Added +38.8k |
| J. Safra Sarasin Holding AG 0.02% of their portfolio | 201.6k $1.2m | New |
| Beacon Pointe Advisors, LLC 0.01% of their portfolio | 200.8k $1.2m | Added +10.9k |
| Arosa Capital Management LP 1.03% of their portfolio | 200.0k $1.2m | Reduced -526.0k |
| FourThought Financial Partners, LLC 0.09% of their portfolio | 198.7k $1.2m | Unchanged |